pls help me, ill mark brainliest and give 5 stars

Answer: The answer is D. Plant A has more turgor pressure than plant B

Explanation:

Answer:

plant A has more turgor pressure than B

The concentration of H₃O⁺ present in a solution of HCL is 7.76247 × 10⁻⁴.

Since we know,

pH<7, therefore there are only H₃O+ particles in the solution.

[H₃O⁺ ] = \(10^{-pH}\) = \(10^{3.110}\) = 7.76247× 10⁻⁴

Pure water will have fewer hydroxide and hydronium ions. They can combine to form water. There will be a dynamic equilibrium between the concentration of molecules of water and ions. The definition of pH states that negative logarithms of hydronium ion concentration. The self-ionization will take place and increase the H⁺ concentration and side by side reduce the OH⁻ concentration.

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Explanation:

from positive to negative terminal

There will be a flow of current from the battery through the wires to the bulbs.

The term circuit speaks of a path that is designed for the flow of current. We know that current often flows from the battery to other circuit components.

It then follows that in the circuit as shown, there will be a flow of current from the battery through the wires to the bulbs.

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The net ionic equation for this reaction is CH3COO- + H2O → CH3COOH + OH-, and the salt is basic. The ionic equation shows only the species that are involved in the reaction. It includes the ions that take part in the reaction, which are the spectator ions excluded from the net ionic equation.

The hydrolysis reaction that occurs when sodium acetate (NaCH3CO2) is dissolved in water predicts whether this salt is neutral, acidic or basic. The net ionic equation for this hydrolysis reaction is:
CH3COO- + H2O → CH3COOH + OH-
Sodium acetate (NaCH3CO2) is a salt composed of a cation (Na+) and an anion (CH3COO-) that does not undergo hydrolysis. However, the CH3COO- ion that is produced upon dissolution in water reacts with water through hydrolysis to produce CH3COOH (acetic acid) and OH-. Thus, the reaction is basic, and its pH will be greater than 7.
Acetic acid (CH3COOH) is a weak acid that will only partially dissociate in water to form H+ and CH3COO-. The CH3COO- ion produced upon dissociation, in turn, reacts with water through hydrolysis to produce CH3COOH and OH-.
Therefore, the net ionic equation for this reaction is CH3COO- + H2O → CH3COOH + OH-, and the salt is basic. The ionic equation shows only the species that are involved in the reaction. It includes the ions that take part in the reaction, which are the spectator ions excluded from the net ionic equation.
In summary, when sodium acetate is dissolved in water, the CH3COO- ion produced undergoes hydrolysis to produce CH3COOH and OH-, making the salt basic. The net ionic equation for this reaction is CH3COO- + H2O → CH3COOH + OH-. This reaction takes place with an increase in the pH value, indicating that the solution is basic.

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The amount of heat absorbed to raise the temperature of 435 grams of water at 1 atm from 25°C to its boiling point, 100°C, is approximately 1.4 × 10^5 joules

What is specific heat?

Specific heat is the amount of heat energy required to raise the temperature of a substance by one unit of temperature per unit of mass. It is a physical property that helps to characterize a substance and is typically measured in units of joules per gram per degree Celsius (J/g°C) or calories per gram per degree Celsius (cal/g°C).

The amount of heat absorbed to raise the temperature of a substance can be calculated using the formula:

Q = mcΔT

where Q is the amount of heat absorbed (in joules), m is the mass of the substance (in kilograms), c is the specific heat capacity of the substance (in joules per kilogram per degree Celsius), and ΔT is the change in temperature (in degrees Celsius).

Substituting the given values, we get:

m = 435 grams = 0.435 kg

ΔT = 100°C - 25°C = 75°C

The specific heat capacity of water is 4.184 J/g°C. We can convert this to joules per kilogram per degree Celsius (J/kg°C) by dividing by 1000:

c = 4.184 J/g°C ÷ 1000 = 4.184 J/kg°C

Substituting these values, we get:

Q = (0.435 kg) × (4.184 J/kg°C) × (75°C)

Q = 140,089.2 J

Therefore, the amount of heat absorbed to raise the temperature of 435 grams of water at 1 atm from 25°C to its boiling point, 100°C, is approximately 1.4 × 10^5 joules. The answer closest to this value is option (B).

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The decay rate, k, for a particular radioactive element is 3.1%, where time is measured in years. The half life of elements is 22.3 years.

Thus, The following equation relates a radioactive substance's half-life (T12) to the decay rate constant, k = ln(2) / T½.  

The decimal representation of the decay rate constant k, which is 3.1%: k = 0.031.

T½ = ln(2) / k

T1+2=ln(2)/0.031 = 22.3 years

The radioactive element has a half-life of about 22.3 years.

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\(\rm{\pink{\underline{\underline{\blue{GIVEN:-}}}}}\)

\(\rm{\pink{\underline{\underline{\blue{TO\:FIND:-}}}}}\)

\(\rm{\pink{\underline{\underline{\blue{SOLUTION:-}}}}}\)

✍️ See the attachment diagram .

✯ Hence, Total displacement from town A to town B is “ 82km ” .

Answer:

displacement is the is shortest distance travelled by an object between the initial and final the position.

So, the displacement between towns A and town B is 82 km.

pls follow me!

The actual diameter of the marble is 1.69 cm.

Vernier calipers are precision measuring tools used to measure the dimensions of objects with high accuracy. However, they can sometimes have a zero error, which means that the zero mark on the calipers does not align exactly with the true zero position. In this case, the zero error is -0.02, indicating that the calipers consistently measure 0.02 cm less than the actual value.

When the calipers are used to measure the diameter of the marble and the reading is obtained as 1.67 cm, we need to account for the zero error. Since the calipers consistently measure 0.02 cm less, we need to add this value to the reading to obtain the actual diameter.

Therefore, the actual diameter of the marble is obtained by adding the zero error (-0.02 cm) to the reading obtained from the calipers (1.67 cm), resulting in an actual diameter of 1.69 cm.

It is important to consider and correct for zero errors when using measuring instruments to ensure accurate measurements. By understanding the zero error of the calipers and making the necessary adjustments, we can obtain more precise and reliable measurements.

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The standard reaction enthalpy for the given reaction is +235.8 kJ/mol.

The standard reaction enthalpy (ΔH°) for the given reaction is determined as follows:

Equation of reaction: 3 Fe₂O₃ (s) → 2 Fe₃O₄ (s) + ½ O₂ (g)

The standard enthalpy of formation values for Fe₂O₃ (s), Fe₃O₄(s), and O₂(g) is used to calculate the standard reaction enthalpy.

ΔH° = [2 × ΔH°f(Fe₂O₃)] + [½ × ΔH°f(O₂)] - [3 × ΔH°f(Fe₃O₄)]

where;

ΔH°f(Fe₂O₃) = -824.2 kJ/mol

ΔH°f(Fe₃O₄) = -1118.4 kJ/mol

ΔH°f(O₂) = 0 kJ/mol

ΔH° = [2 × (-1118.4 kJ/mol)] + [½ × 0 kJ/mol] - [3 × (-824.2 kJ/mol)]

ΔH° = -2236.8 kJ/mol + 0 kJ/mol + 2472.6 kJ/mol

ΔH° = 235.8 kJ/mol

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1. Fluid compressibility (C): Fluid compressibility refers to the measure of how much a fluid's volume changes in response to a change in pressure.

2. Solution-gas/liquid ratio (SGLR): The solution-gas/liquid ratio represents the volume of gas dissolved in a given volume of liquid at a specific pressure and temperature.

3. Fluid formation volume factor (FVF): The fluid formation volume factor represents the ratio of the volume of a fluid at reservoir conditions (pressure and temperature) to its volume at surface conditions.

4. Fluid densities (ρ): Fluid densities refer to the mass per unit volume of a fluid.

5. Fluid viscosities (μ): Fluid viscosities represent the measure of a fluid's resistance to flow.

1.  Equation: C = -1/V * dV/dP

  Symbol: C

  Unit: 1/Pascal (Pa^-1)

  Correlation: The compressibility of fluids can vary depending on the fluid type. For ideal gases, the compressibility is inversely proportional to pressure.

2.Equation: SGLR = V_gas / V_liquid

  Symbol: SGLR

  Unit: Volumetric ratio (e.g., scf/bbl)

  Correlation: The solution-gas/liquid ratio is influenced by the pressure and temperature conditions, as well as the composition of the fluid.

3. Equation: FVF = V_reservoir / V_surface

  Symbol: FVF

  Unit: Volumetric ratio (e.g., bbl/STB)

  Correlation: The fluid formation volume factor depends on the composition and properties of the fluid, as well as the reservoir conditions.

4. Equation: ρ = m / V

  Symbol: ρ

  Unit: Mass per unit volume (e.g., kg/m^3)

  Correlation: Fluid densities can vary depending on the type and composition of the fluid. For example, water has a density of approximately 1000 kg/m^3.

5. Equation: No single equation; viscosity is measured experimentally using viscometers.

  Symbol: μ

  Unit: Pascal-second (Pa·s) or centipoise (cP)

  Correlation: The viscosity of a fluid is influenced by temperature and pressure. Different fluids exhibit different viscosities, ranging from low-viscosity fluids like water to high-viscosity fluids like heavy oil.

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The binding energy of silver-109 (Ag-109) in kJ/mol nucleons is not a well-defined concept, as binding energy is typically calculated for atomic nuclei rather than individual isotopes.

The binding energy of an atomic nucleus is the energy required to completely separate all of its constituent protons and neutrons into individual particles. It is usually expressed in units of energy per nucleon, which is the energy required to separate one proton or neutron from the nucleus.

The average binding energy per nucleon for an atomic nucleus is typically highest for medium-mass nuclei, such as those found in the region of the so-called "valley of stability" on the nuclear chart.

The binding energy per nucleon for silver-109 is not likely to be particularly high, as silver is a relatively heavy element and the binding energy per nucleon tends to decrease with increasing atomic number (Z).

Without more information about the specific calculation being used to determine the binding energy of Ag-109, it is not possible to accurately provide a value for the binding energy in kJ/mol nucleons.

The required masses (g/mol) are also not specified in the question, so it is not clear what context these values might be used in.

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Answer:

During the fractional distillation of crude oil: heated crude oil enters a tall fractionating column , which is hot at the bottom and gets cooler towards the top. vapours from the oil rise through the column. vapours condense when they become cool enough.

Hope it helps you :)

The fractionating column's crystal clear glass beads provide such a vast surface area for heated vapors to cool and condensed continuously.

The fractionating column is inserted into the mouth of the distillation flask, which contains the saturated solution to be separated.

Heated crude oil is pumped into a tall fractionating column that is heated at the bottom and cools as it rises.

The oil fumes ascend through the column. When vapors cool down sufficiently, they condense. Various heights are used to lead liquids out of the columns.

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Rate = k[A] = first order reaction

Given

Rate law

Required

A first-order reaction

Solution

The rate law : equation for the rate of chemical reaction

For reaction

aA + bB ⇒ C

The rate : r = k[A]ᵃ[B]ᵇ

The sum of exponents(a+b) is the reaction order

From the choice :

a. a+b = 2, second order reaction

b. a+b = 3, third order reaction

c. a+b = 4, fourth order reaction

d a+0 = 1, first order reaction

Silicon is classified as a. a micromineral.

Microminerals, also known as trace minerals, are minerals that are required in very small amounts in the body, typically less than 100mg/day. Silicon is a component of connective tissue and bone, and plays a role in the health of skin, hair, nails, and cartilage. It also has been shown to improve bone density and strength, and may have a protective effect against Alzheimer's disease. While it is not considered an essential nutrient, studies have shown that adequate intake of silicon may be beneficial for overall health.

Foods that are high in silicon include whole grains, beans, nuts, and some fruits and vegetables. It is important to note that there is currently no recommended daily intake for silicon, but a balanced and varied diet can help ensure adequate intake. Silicon is classified as a. a micromineral.

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The pH at 25^oC of a 0.19 M  solution of potassium butanoate (KC, H,CO approximately 2.96.

Given that potassium butanoate, KC, H, CO, is a weak acid with pKa of 4.82 and a solution of 0.19 M concentration is provided, we can calculate the pH at 25°C as follows:

\(Kw = Ka × Kb\)

Kb = Kw/Ka

Where, Kw = 10^-14 (at 25°C)

Ka = 10^-pKa

We have the pKa value of potassium butanoate as 4.82.

∴ Ka = 10^-4.82

= 1.35 × 10^-5mol/L

Now, Kb = Kw/Ka

= 10^-14/1.35 × 10^-5

= 7.41 × 10^-10M

At 25°C, we can calculate the concentration of H+ ions by using the expression given below:

Ka = [H+] × [A-] / [HA]

[H+] = Ka × [HA] / [A-]

= (1.35 × 10^-5) × √0.19 / 0.19

= 1.1 × 10^-3M

Thus, pH = -log[H+]= -log(1.1 × 10^-3)≈ 2.96

Hence, the pH of 0.19 M potassium butanoate solution at 25°C is approximately 2.96.

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Answer:

Yah, it's true.

because protons are represented as helium (²4He) which are positive.

electrons are represented as 0-1e which is negative

Answer:

true

boiling is a bulk phenomena

Answer:

Carbon is moving into living things (Parrotfish eating), and (I assume) Carbon is moving out of their body after they finish digesting.

This is what happens in nature, but I suspect the answer is moving into living things

Explanation:

Mice and birds excrete nitrogenous wastes in the form of uric acid. The correct option is a).

Uric acid is a nitrogenous waste product that is excreted by some animals, including birds, reptiles, and insects. It is a relatively non-toxic compound that can be excreted in a semi-solid form, which helps conserve water.

Mammals, on the other hand, typically excrete nitrogenous wastes in the form of urea or ammonia, which requires more water to eliminate from the body. Therefore, among the given options, only mice and birds excrete nitrogenous wastes in the form of uric acid.

Mice are mammals that produce urea as their primary nitrogenous waste product. However, birds excrete nitrogenous wastes in the form of uric acid, which is produced in the liver and excreted from the cloaca. Therefore, option a) is the correct answer.

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The theory of traits of a population change over time explains how people can change with respect to the  strength and intensity of basic trait dimensions.

Trait theory in psychology serves as the thorry that focus on the  idea that people differ  whichg can be attributed to their strength  as well as  intensity of basic trait dimensions.

It shouuld be noted that the criteria that characterize personality traits involves the act of consistency as well as  stability,  along with  individual differences.  Natural selection  give us the underswtandng of how genetic traits of a species undergo change over time.

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Answer:

Explanation:

-Soda Bottle Sprinkler

-DIY Kitchen Storage Containers

-Piggy Bottle Bank

- pencil case

- shoe pot for plants

- turn shoe into sandals

The net ionic equation for the reaction between nitric acid (HNO3) and a carbonate ion (CO32-) in solution is:

2H+ + CO32- → CO2 + H2O

In this reaction, the H+ ions from the nitric acid react with the CO32- ions from the carbonate, producing carbon dioxide (CO2) and water (H2O). The nitrate (NO3-) ion does not participate in the reaction and is therefore not included in the net ionic equation.

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From thermal comfort point of view, thick walled structures are beneficial in hot and humid climates is the statement that is true.The correct option is C.

Thick walled structures are beneficial in hot and humid climates from the thermal comfort point of view.How do thick walled structures help in hot and humid climates - In hot and humid climates, thick walls tend to absorb the heat present in the environment. This absorption helps to keep the interior of the structure cool.

Additionally, thick walls take more time to heat up and more time to cool down. Thus, in hot and humid climates, thick walls are a better choice than thin walls because they provide thermal comfort.

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The correct answer for the thermochemical equation for the standard molar enthalpy of formation of solid zinc nitrate is option b) Zn(s) + 2N(g) + 6O(g) → Zn(NO3)2(s).

This equation represents the formation of one mole of solid zinc nitrate from its constituent elements in their standard states, with all reactants and products in their standard states and under standard conditions (25°C and 1 atm pressure).
To determine the standard molar enthalpy of formation of a compound, we need to measure the enthalpy change that occurs when one mole of the compound is formed from its elements in their standard states. In this case, we need to measure the enthalpy change for the reaction Zn(s) + 2N(g) + 6O(g) → Zn(NO3)2(s), which corresponds to the formation of one mole of solid zinc nitrate from its elements in their standard states.
This reaction can be measured experimentally using calorimetry, which involves measuring the heat released or absorbed during the reaction. The enthalpy change for this reaction is then divided by the number of moles of zinc nitrate formed to obtain the standard molar enthalpy of formation of solid zinc nitrate.

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Answer:

a) melting point

Answer:

Light vs electron

Explanation:

Light Microscope vs Electron Microscope. Light microscopes and electron microscopes both use radiation - in the form of either light or electron beams, to form larger and more detailed images of objects (e.g. biological specimens, materials, crystal structures, etc.) than the human eye can produce unaided.

The concentration of calcium chloride in the original vial is approximately 5.39 mEq/mL.

To calculate the concentration of calcium chloride in mEq/mL in the original vial, we need to consider the dilution that occurs when the 100-mL vial is added to a 1-L container of water for injection.

Given information:

The molecular weight (MW) of calcium chloride dihydrate is 147 g/mol.

The dilution results in a 0.56% strength solution.

First, let's calculate the mass of calcium chloride in the 1-L container:

Mass of calcium chloride = (0.56% / 100%) * 1,000 mL * 1 g/mL = 5.6 g

Next, we need to convert the mass of calcium chloride to moles:

Moles of calcium chloride = 5.6 g / 147 g/mol = 0.038 moles

Since each mole of calcium chloride generates two moles of calcium ions (Ca2+) during dissociation, we have:

Moles of calcium ions = 0.038 moles * 2 = 0.076 moles

Finally, we calculate the concentration of calcium chloride in mEq/mL:

Concentration of calcium chloride = (0.076 moles / 1,000 mL) * (1,000 mEq / 1 mole) = 0.076 mEq/mL

Therefore, the concentration of calcium chloride in the original vial is approximately 5.39 mEq/mL.

The concentration of calcium chloride in the original 100-mL vial, when added to a 1-L container of water for injection resulting in a 0.56% strength solution, is approximately 5.39 mEq/mL.

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To prepare 50 ml of a solution, containing 5 grams/liter of salt, the amount in grams of salt we need is 0.25 grams.

To prepare 50 ml of a solution containing 5 grams/liter of salt, we need to use the following formula:

Mass of salt = volume of solution x concentration of solution

Mass of salt = 50 ml x 5 g/L

Convert the volume to liters:

50 ml ÷ 1000 ml/L = 0.05 L

Substitute the values into the formula:

Mass of salt = 0.05 L x 5 g/L

Mass of salt = 0.25 g

Therefore, we need 0.25 grams of salt to prepare 50 ml of a solution containing 5 grams/liter of salt.

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At equilibrium, the composition of the reaction vessel with 0.51 moles of CO₂ and 0.51 moles of H₂ is given by the equilibrium constant K, which is 819.

The reaction given is:

H₂(g) + CO₂(g) ⇌ CO(g) + H₂O(g)

So, we know the formula for Kp and Kc in terms of partial pressure and concentration are as follows:

Kc = (CO(g) × H₂O (g)) / (CO₂(g) × H₂(g))

Kp = (PCO × PH₂O) / (PCO₂ × PH₂)

At equilibrium, the equilibrium constant expression can be written as:

Kc = [CO][H₂O] / [H₂][CO₂] = x²/ [(0.51-x)(0.51-x)]

Substituting the given value of Kc into the above equation and solving for x gives:

819 = x²/[(0.51-x)(0.51-x)]

x = 0.302

From the results, we can say that "There will be very little CO₂ and H₂" at equilibrium.

The equilibrium constant for the given reaction is 819.

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Answer:

4/5 of a bottle

Explanation:

Sarah, Leah, Haley, Lindsay, and Kim bought 4 bottles of water to share among themselves. They divided each bottle of water into 5 equal portions. Sarah took 1 portion from each bottle of water. Which equation represents how much of a bottle of water Sarah took?

Sarah must have taken 4/5 of a bottle

First, the 4 bottles of water were divided into 5 equal portions;

4 x 5 = 20 portions.

Sara too 1 portion from each bottle;

1 portion x 4 bottles = 4 portions

Which equation represents how much of a bottle water Sarah took?

Since each bottle water was divided into 5 equal proportions and assuming that the bottle waters are of the same volumes, then Sarah has taken 4 out of 5 portions of a bottle water.

Answer: 4 ÷ 5 ﹦4/5  ♡♡♡

Explanation: When you see eqautions like these, always remember that                          the first number goes on the top and the second one goes on the bottom. Hope this helps! (～﹃～)~Hi☆